Definition: You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.
Input: Question: A train 450 m long running at 108 kmph crosses a platform in 25 sec. What is the length of the platform?

 Option A: 271

 Option B: 266

 Option C: 350

 Option D: 277

 Option E: 300

Option E